Screening 2D echocardiogram in a parasternal long axis view with mitral valve leaflets at maximal diastolic excursion. There are no morphological features of RHD of the mitral valve (both leaflets are thin and demonstrate no diastolic restriction). View Video 3 at http://movie-usa.glencoesoftware.com/video/10.1530/ERP-17-0037/video-3.